CHAPTER 6: LIFE PROCESSES Circulation

Class – X Subject - Biology CHAPTER 6: LIFE PROCESSES

Circulation

I. Case Study based question

Q.1. Read the following case study and answer the given questions.

All living cells need nutrients, O2, and other essential substances. Also, the waste harmful

substances need to be removed continuously for the healthy functioning of cells. So a well-

developed transport system is mandatory for living organisms. Complex organisms have

special fluids within their bodies to transport such materials. Blood is the most commonly used

body fluid by most of the higher organisms. Lymph also helps in the transport of certain

substances.

i. Which of the following is not a type of blood cell?

a) Red blood cell

b) White blood cell

c) Platelets

d) Antibodies

ii. Why white blood cells are called soldiers of the body?

a) They are capable of squeezing out of the blood capillaries.

b) They are manufactured in the bone marrow

c) They fight against disease-causing germs

d) They have granular cytoplasm with the lobed nucleus

iii) Which among the following is not a function of blood?

a) It regulates body temperature

b) It protects the body from disease

c) It carries hormones from endocrine glands.

d) None of the above

iv) Name the blood cells, whose reduction in number can cause clotting disorder, leading to

excessive loss of blood from the body.

a) Erythrocytes

b) neutrophil

c) Thrombocytes

d) Leucocytes

v) Assertion: Lymph is a pale yellow colored fluid circulating in the body.

Reason: The flow of lymph is unidirectional that is from tissue to heart.

a) Both A and R are true and R is the correct explanation of the Assertion.

b) Both A and R are true but R is not the correct explanation of the Assertion.

c) A is true but R is false.

d) A is false but R is true

Q.2. Read the following case study and answer the given questions .

The heart is the key organ for blood circulation and double circulation is an efficient way of

circulation as it provides an effective way of circulation. The main difference is that the blood

follows two routes – one for oxygenated blood and the other for deoxygenated blood. Hence,

the name “double circulation.” The majority of mammals, including humans, utilize a double

circulatory system.

i) Identify the incorrect statement about Double circulation.

a) It occurs in fishes

b) It occurs in humans

c) It is composed of the systemic circulation and pulmonary circulation

d) During double circulation heart flows twice through the heart.

ii) Systolic blood pressure is ________.

a) 80 mmHg

b) 100mm Hg

c) 120 mmHg

d) 60 mmHg

iii) If an organism has a double circulatory system, it means that:

a) their blood circulates twice as fast

b) they have two circuits, one for oxygenated blood, one for deoxygenated blood

c) they have a two-chamber heart

d) their circulatory system has twice the volume of blood.

iv) left atrium receives oxygenated blood from the _______.

a) Pulmonary vein

b) Pulmonary artery

c) Superior vena cava

d) Inferior vena cava

v) Assertion: Ventricles have thicker walls than auricles.

Reason: Ventricles have to pump blood into various organs with greater pressure.





Q.3. Given below are sections of two pipes A and B. If you need to represent blood vessels

with these, which pipe would you correspond to the artery and which one to a vein?

Identify it and answer the following questions.

i) „A‟ is defined as the blood vessel which_____

a) always supply oxygenated blood to the different organs

b) always carry blood away from the heart to different organs

c) always break up into capillaries that reunite to form a major artery

d) always carry blood towards the heart.

ii) In „A‟ valves are present to check the backflow of the blood at

a) atmospheric pressure

b) high pressure

c) low pressure

d) in all the above conditions

iii) Which of the following statement is correct regarding „B‟?

a) Carries blood from an organ towards the heart

b) Always carries oxygenated blood with a single exception

c) always carries deoxygenated blood

d) Always carries blood towards the heart

iv) Which of the following statement is incorrect?

a) „A‟ has typically large lumen then „B‟

b) Walls of „B‟ are elastic enabling them to stretch and shrink during changes in blood

pressure.

c) Blood pressure in „A‟s more than that of „B‟

d) „A‟ carries the blood to the lungs for oxygenation.

v) Assertion: Arteries have thick and elastic walls.

Reason: Blood flows under high pressure in arteries





Complex Multiple Choice Questions

Q.4. In the given diagram the lumen of the blood vessel is depicted by observing the lumen

identify blood vessels X, Y, and Z

X Y Z

a Artery Capillary Vein

b Artery Vein Capillary

c Vein Artery Capillary

d capillary Artery Vein

Q.5. Read the given statement and chose the correct option given below.

Transportation in the plant is done by A and B, A transport food in all parts of the plant while B

transport water and mineral to aerial parts of the plant. C is the components of B and D is the

component of A. Identify A, B, C, and D and choose the correct option given below

A B C D

a Xylem Phloem Sieve tube vessels

b Phloem Xylem Sieve tube vessels

c Vessels Phloem Xylem Sieve tube

d Phloem Xylem vessel Sieve tube

Q.6. In the given figure identify the structure labeled as X, Y, W, and Z

A B C D

a Sieve plate Sieve tube Phloem parenchyma Companion cell

b Phloem parenchyma Sieve plate Companion cell Sieve tube

c Companion cell Phloem parenchyma Sieve plate Sieve tube

d Sieve plate Phloem parenchyma Sieve plate Companion cell

Q.7. In the given diagram the structure of the human heart is depicted by observing the

diagram and identifies blood in the given structure to choose the correct option given

below.

1 2 3 4 5 6

a Pulmonary artery Vena cava Right atrium Left atrium Aorta Ventricle

b Pulmonary artery Aorta Left atrium Right atrium Ventricle Vena cava

c Aorta Pulmonary artery Left atrium Right atrium Ventricle Vena cava

d Aorta Ventricle Right atrium Left atrium Vena cava Aorta

Q.8. In the given diagram pulmonary circulation is depicted by observing the diagram

identify the given blood vessels X and Y and choose the correct option.

X Y

a Pulmonary artery Vena cava

b Pulmonary artery Pulmonary vein

c Pulmonary vein Pulmonary artery

d Aorta Vena cava

Q.9. Match column A and B and choose the correct option given below:

A B

a Right atrium i Carry blood away from the heart

b Left ventricle ii Carry blood to the heart

c Artery iii Oxygenated blood

d vein iv deoxygenated blood

a) (a-ii),(b-i),(c-iv),(d-iii)

a) (a-iv), (b-iii), (c-i) (d-ii)

c) (a-iv),(b-ii),(c-iii),(d-i)

d) (a-iii),(b-iv),(c-ii),(d-i)


A B

a Fish i 3 chambered heart

b Amphibian ii 2 Chambered heart

c Birds iii Incomplete double circulation

iv 4 chambered heart

a) (a-ii),(b-i),(c-iv)

a) (a-iii), (b-i), (d-ii)

c) (a-iv),(b-ii),(c-iii),

d)(a-ii),(b-iv),(c-i)


A B

a Stomata i Absorption of water

b Xylem ii Transpiration

c Root hairs iii Transport of food

d Phloem iv Transport of water

v Synthesis of carbohydrates

a) (a-iv),(b-i),(c-ii),(d-iii)

a) (a-ii), (b-iv), (c-i) (d-iii)

c) (a-iv),(b-ii),(c-i),(d-iii)

d) (a-iii),(b-iv),(c-ii),(d-i)


A B

a Superior vena cava i Carries deoxygenated blood to the lungs

b Inferior vena cava ii Carries oxygenated blood from the lungs

c Pulmonary artery iii Bring deoxygenated blood to the right atrium from lower body

parts

d Pulmonary vein iv Bring deoxygenated blood to the right atrium from upper body

parts

a) (a-iv),(b-iii),(c-i),(d-ii)

b) (a-iv), (b-ii), (c-iii) (d-i)


d)(a-iii),(b-iv),(c-ii),(d-i)


A B

a RBC i Coagulation

b Antibody ii Immunity

c Platelets iii Gas transport

d Systole iv Hypertension

v Contraction

a) (a-v),(b-ii),(c-iv),(d-iii)

a) (a-iv), (b-iii), (c-i) (d-ii)


d)(a-iii),(b-ii),(c-i),(d-v)

Q.14. Which option correctly showing the systemic blood circulation in the body?

a) Lung →Pulmonary vein →Left atrium

b) Right ventricle → Lungs→ Left atrium

c) Left ventricle → Body cells→ Right atrium

d) Lungs →Pulmonary artery →Right atrium

Q.15. Which option correctly shows the transport of oxygen to the cell?

a) Lungs →Pulmonary vein →Left atrium →Left ventricle →Aorta → Body cells

b) Lungs →Pulmonary vein →Right atrium →Right ventricle → Aorta → Body cells

c) Lungs →Pulmonary artery →Left atrium → Left ventricle → Vena cava → Body cells

d) Lungs →Pulmonary artery →Right atrium → Right ventricle→ Vena cava → Body

cells

Q.16. Which option correctly showing the pulmonary blood circulation in the body?

a) Lungs →Pulmonary vein →Left atrium

b) Right ventricle → Lungs→ Left atrium

c) Left ventricle → Body cells→ Right atrium

d) Lungs →Pulmonary artery →Right atrium

Q.17. What is the correct route for blood flow in a human?

a) Left atrium →Left ventricle → Lungs → Right atrium → Right ventricle

b) Right atrium →Right ventricle → Lungs→ Left atrium →Left ventricle

c) Left atrium →Left ventricle → Right atrium → Right ventricle → Lungs

d) Right atrium → Right ventricle →Left atrium → Left ventricle→ Lungs

Q.18. Which of the following statement is (are) true about the heart?

I) Left atrium receives oxygenated blood from different parts of the body while the right atrium

receives deoxygenated blood from the lungs

II) Deoxygenated blood is purified in the lungs.

III) Left ventricle pumps oxygenated blood to different body parts while the right ventricle

pumps deoxygenated blood to the lungs

IV) Left atrium transfers oxygenated blood to the right ventricle which sends it to different body

parts Right atrium receives oxygenated blood from different parts of the body while the left

ventricle pumps oxygenated blood to different parts of the body.

a) I and II

b) II and III

c) III and IV

d) I and IV

Q.19. Choose the correct statement that describes arteries:

I) They have thick elastic walls, blood flows under high pressure; collect blood from different

organs and bring it back to the heart

II) They have thin walls with valves inside, blood flows under low pressure and carries blood

away from the heart to various organs of the body

III) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to

various organs of the body

IV) They have thick elastic walls without valves inside. The Blood flows under high pressure

and carries blood away from the heart to different parts of the body

a) I and IV

b) II and III

c) only III

d) only IV

Q.20. Choose the incorrect statement(s) regarding the vascular tissue in plants.

I) Xylem always transport food in one direction.

II) Tracheids and vessels are the components of xylem.

III) Companian cells are living in nature

IV) Root pressure helps in the conduction of food.

a) I,II,III,and IV b) I ,II and III c) II and III d) I and IV

Q.21. Concerning the blood in a normal person, which of the following statement is(are)

correct?

I) The blood has more platelets than WBC

II) WBCs are soldiers of the body.

III) WBC helps in the transport of oxygen in the body.

IV) Plasma and blood cells are the component of blood

a) I, and IV

b) I, II, and IV

c) II and III

d) I and II

Q.21. Regarding the blood pressure, which of the following statement is(are) correct?

I) The systolic blood pressure of a normal individual is 120 mmHg

II) The diastolic blood pressure of a normal adult is 80 mmHg

III) Blood pressure can be measured by a sphygmomanometer

IV) The condition of high blood pressure is known as hypertension

a) Only I

b) I and II

c) I, II, and III

d) I, II, III, and IV

Q.22. Which of the following statement is/ are incorrect?

I) Movement of molecules does not take place in cells.

II) RBCs transport oxygen in the body

III) Hemoglobin has more affinity for carbon monoxide than oxygen

IV) Energy is essential for life processes

a) Only I

b) I and II

c) I, and III

d) I, II, III, and IV

Q.23. Pick the correct one

a) Blood = plasma + blood cells

b) Lymph = Plasma + RBC

c) Plasma = Blood – Lymphocytes

d) Blood = Plasma + WBC

Q.24. An adult human has systolic and diastolic pressures as:

a) 80 mm Hg and 120 mm Hg

b) 120 mm Hg and 80 mm Hg

c) 50 mm Hg and 80 mm Hg

d) 80 mm Hg and 80 mm Hg

Q.25. Which chambers of the human heart contain oxygenated blood?

a) Left atrium and left ventricles

b) Left atrium and right ventricle

c) Right atrium and left ventricle

d) Right atrium and ventricle

Q.26. Assertion: Blood takes up oxygen from the alveolar air and releases carbon dioxide

during exchange

Reason: The concentration of oxygen is more in alveolar air





Q.27. Assertion: Phloem helps in the translocation of food from the leaf.

Reason: Phloem provides mechanical support.





Q.28. Assertion: The movement of water and mineral in the xylem is bidirectional.

Reason: The upward movement of water in the xylem is due to the transpirational

pull.





Q.29. Assertion: Ventricles have thicker walls than auricles.

Reason: Ventricles have to pump blood into various organs under great pressure.





Q.30. Assertion: The average number of the heartbeat of a person at rest is about 72 times

per minute

Reason: One contraction and one relaxation of the heart constitute a complete

heartbeat.





CHAPTER 6 LIFE PROCESSES

EXCRETION


Our body needs to remove the waste that build-up from cell activities and from digestion. If this

waste is not removed then our cells can stop working and we can get very sick. The organs of

our excretory system help to release wastes from our bodies. the excretory system consists of

a pair of kidneys, a pair of ureters, urinary bladder, and urethra. Each kidney is made up of

nearly one million complex tubular structures called nephrons. The formation of urine involves

various processes that take place in the different parts of the nephron. Each nephron consists

of a cup-shaped upper end called Bowman‟s capsule containing a bunch of capillaries called

the glomerulus. Bowman‟s capsule leads to a tubular structure proximal convoluted tubules,

loop oh Henle, and distal convoluted tubules which ultimately joins the collecting tubule.

i) Name the structure where ultrafiltration takes place in the nephron.

a) Bowmen‟s capsule

b) Proximal convoluted tubule

c) Distal convoluted tubule

d) Loop of Henle

ii) Glomerular filtration is first collected by ______.

a) distal convoluted tubule

b) proximal convoluted tubule

c) Bowmen‟s capsule

d) loop of Henle

iii) The reason why the right kidney is slightly lower than the left is_____.

a) the left kidney is bigger than right

b) considerable space occupied by the heart

c) considerable space occupied by the liver on the right side

d) the right kidney is bigger than the left

iv) This artery passes blood to the kidney

(a) common iliac

(b) cystic

(c) renal

(d) celiac

v) The functional unit of the kidney is_______.

(a) Hilum

(b) Neurons

(c) Nephrons

(d) Medulla


The life of every organism depends on certain basic processes. Excretion is one among them.

Different organisms follow different modes of excretion. In complex organisms including

humans, there is a specialized system for excretion called the human excretory system.

We all obtain our nutrients from different sources which are later digested and metabolized in

our body. After metabolic reactions, the body starts to sort out useful and toxic substances in

an individual. As we all know, the accumulation of the toxins may be harmful and the body

removes all the metabolic wastes by the process called excretion.

Different organisms follow different modes of excretion such as kidneys, lungs, skin, and eyes

depending on their habitat and food habit.

For example- Aquatic animals excrete waste in the form of ammonia, while birds and insects

excrete mainly uric acid. Humans produce urea as the major excretory product.

i. This process of release of saliva and digestive enzymes from the body cells

is known as_______.

a) excretion b) secretion c) egestion d) elimination

ii. In unicellular organisms, waste products are discharged outside through_______.

a) surface of the cell

b) Kidneys

c) Glands

d) All of these

iii) The main excretory organ of earthworm is______.

a) surface of the cell

b) Kidneys

c) Nephridia

d) Skin

iv) In green plants the byproduct of photosynthesis_____.

a) carbon dioxide and water

b) carbon dioxide and oxygen

c) Oxygen and water

d) None o these

v) In anaerobic respiration the end product is ________.

a) carbon dioxide

b) ethanol

c) acetic acid

d) glucose


An artificial kidney is a dialysis machine. The patient‟s blood is led from the radial artery in his

arm through the machine where the urea and excess salts are removed and the purified blood

is returned to a vein in the same arm. In case of permanent damage to the kidney, dialysis is to

be repeated for about twelve hours a week.

i. Dialysis commonly refers to ___________

a) hemodialysis

b) chemo dialysis

c) liver dialysis

d) pancreatic dialysis

ii. The membrane used for dialysis is made of _________.

a) cellulose

b) polyvinyl chloride

c) polyethylene

d) chitin

iii. Dialysis is a process of where_____.

a) the pumping of the heart in enhanced

b) liver enzyme replacement

c) waste material is removed from the blood

d) none of the above

iv. Dialysis machine is also known as_____.

a) artificial lungs b) artificial kidney

c) artificial heart d) artificial brain

v. Which of the following is a nitrogenous waste that is excreted out by the human kidneys?

a) Amino acids b) Urea

c) Bilirubin d) glucose

Q.4. Read the following case study and answer the given questions .

In humans, the excretory system removes nitrogenous waste along with other metabolic

wastes from the body. It consists of few parts, viz. a pair of kidneys, renal arteries and veins,

ureters, urinary bladder, and urethra.The kidneys are bean-shaped organs. These are located

on each side of the vertebral column. It performs the filtration of blood to produce excretory

fluid or urine. The structural and functional unit of the kidney is the nephron. A nephron

consists of Bowman‟s capsule, lomerulus, proximal tubule, Henle‟s loop, distal tubule, and

collecting duct. Renal arteries carry blood (to be filtered) to the kidneys from the heart and

renal veins carry filtered blood from the kidneys to the inferior vena cava. The kidneys open

into the ureters at the renal hilum. Ureters are tubes, each of which attaches to a kidney and

carries urine from the kidneys to the urinary bladder. Ureters open into the urinary bladder

which is a muscular sac. This urine is stored temporarily. When filled, it contracts and passes

the urine to the urethra. A thin, fibro-muscular tube called the urethra carries the urine from the

urethra to the exterior.

i) Which system is represented in the above diagram?

a) Nervous system

b) Circulatory system

c) Excretory system

d) Endocrine system

ii) Which of the following is known as the basic functional unit of the human kidney?

a) Nephron

b) Cilia

c) Neuron

d) Hilum

iii) Where kidneys are present in our body?

a) at back behind the lungs

b) near the heart

c) at the back just above the waist

d) behind the pancreatic gland

iv) What is the function of the kidney?

a) to regulate blood pressure

b) to maintain acid-base balance of the blood

c) to regulate the level of salts in the blood

d) all of the above

v) The Bowman‟s capsule, a part of the kidney is the site of______.

a) filtration of blood constituents

b) re-absorption of water and glucose

c) formation of ammonia

d) formation of urea

Q.5. In the given diagram structure of the Bowman’s capsule is depicted by observing the

diagram identify blood vessels A, B, and C

A B C

a Afferent arterioles Glomerulus Efferent arterioles

b Glomerulus Afferent arterioles Efferent arterioles

c Efferent arterioles Glomerulus Afferent arterioles

d Glomerulus Efferent arterioles Afferent arterioles

Q.6. In the given figure identify the structure labeled as A, B, C, and D.

A B C D

a Kidney Ureter Urinary bladder Urethra

b Ureter Kidney Urethra Urinary bladder

c Urinary bladder Ureter Kidney Urethra

d Ureter Urethra Urinary bladder Kidney

Q.7. Which substances will be present in the glomerular filtrate from the kidneys of

mammals?

Glucose Urea Salts

a + + -

b + + +

c - - -

d - + +

Q.8. A healthy woman consumes a liter of water at once. What changes will occur in her

body?

Select the correct option for (i) and (ii) from the given below:

(i) (ii)

a Plasma becomes diluted The concentration of the urine formed

b The osmotic pressure of the plasma decreases An increase in the volume of urine formed

c The body cells undergo shrinkage Less water is reabsorbed by the kidneys

d The osmotic pressure of the plasma increases Formation of dilute urine occurs.

Q.9. In the figure given alongside, the structures associated with human kidneys are marked

(X, Y, and Z). The relative concentration of urea in these structures is

a) X is sometimes higher than Y

b) Y is always higher than Z

c) Y is always lower than Z

d) Z is sometimes lower than X

Q.10. The given figure represents a single nephron from a mammalian kidney. Identify the

labeled parts match them with the option (i-iv) and select the correct answer.

I) The site of ultrafiltration

II) Collect the urine and make it more concentrated

III) Represents the loop of Henle

IV) Represents distal convoluted tubules

a) (I – D), (II –E), (III –B), (IV –C)

b) (I – D), (II –C), (III –E), (IV –D)

c) (I – A), (II –E), (III –B), (IV –D)

d) (I – A), (II –D), (III –E), (IV –B)

Q.11. The correct path of urine is ____.

a) Kidney→ Ureter → Urethra→ Urinary bladder

b) Kidney → Urinary bladder → Urethra → Ureter

c) Kidney→ Ureter → Urinary bladder→ Urethra

d) Urinary bladder → Kidney → Ureter →Urethra

Q.12. The correct path of urine flow within the nephron is_______.

a) Bowmen‟s capsule → Distal convoluted tubule → Loop of Henle → Proximal

convoluted tubule → collecting duct

b) Collecting duct → Proximal convoluted tubule → Bowmen‟s capsule → Distal

convoluted tubule → Loop of Henle

c) Bowmen‟s capsule → Proximal convoluted tubule → Loop of Henle → Distal

convoluted tubule → collecting duct

d) Distal convoluted →Proximal convoluted tubule → Loop of Henle → Bowmen‟s

capsule → collecting duct

Q.13. Choose the forms in which most plants absorb nitrogen:

I. Proteins

II. Nitrates and nitrites

III. Ammonia

IV. Atmospheric nitrogen

a) I and II

b) II and III

c) III and IV

d) I and IV

Q.14. The following changes take place in an athlete’s body during a100 m race. Which

change occurs first?

a) Increased availability of oxygen to muscles

b) Increased breathing rate

c) Increased carbon dioxide concentration in the blood

d) Increased production of carbon dioxide by muscle

Q.15. The function of the glomerulus and Bowman’s capsule of the nephron is to:

I. Reabsorb water into the blood

II. eliminate ammonia from the body

III. reabsorb salts and ammonia

IV. Filter the blood and capture the filtrate

a) I and II

b) I and III

c) only IV

d) only III

Q.16. The diagram given below represents the liver, kidney, and some associated blood

vessels. Identify the vessel from the labeled parts A to D in which the blood will contain

the lowest concentration of urea.

a) A b) B c) C d) D

Q.17. The figure given below is representing the dialysis machine for removing nitrogenous

waste in patients with kidney failure.

Which substances out of the following in the following in the dialysis fluid should be at a lower

concentration than in the blood of the patient?

a) Glucose and urea

b) Glucose and amino acids

c) Salts and urea

d) Glucose and salts

Q.18. The diagram given alongside shows the human excretory system. Identify the function

of part labeled as X

a) To excrete urea

b) To produce urea

c) To produce urine

d) To store urine

Q.19. In humans, the elimination of excretory wastes is carried out by_____.

I. Kidney II. Lungs III. Liver IV. Skin

a) I only

b) I and IV

c) I, II, III and IV

d) I, II, and IV

Q.20. The dialysis fluid contains all except_______.

I) Nitrogenous waste II. Proteins III. Electrolytes IV. Glucose

a) I and II

b) I and III

c) Only I

d) III and IV

Q.21. Assertion: Excretion is the biological process by which harmful wastes are removed

from the organism’s body.

Reason: The mode of excretion is completely the same in both unicellular and

multicellular organisms.





Q.22. Assertion: In humans, a major amount of water is absorbed by the tubular part of the

nephron.

Reason: Absorption of water depends on the dissolved waste to be excreted from

the body.





Q.23. Assertion: Haemodialysis can save the life of patients with kidney failure.

Reason: Waste products like urea can be removed from the blood by hemodialysis.





Q24. Assertion: Plants lack excretory organs.

Reason: Plants usually absorb essential nutrients.





Q.25. Assertion: Human body produces highly toxic substances, which is not eliminated

may cause the death.

Reason: Excretory substance removes nitrogenous waste from the body.





Q.26. Assertion: The main organ of the human excretory system is the kidney.

Reason: Kidneys perform the function of removing excess water and nitrogenous

wastes from the body.





Q.27. Assertion: An artificial kidney is a device used to remove nitrogenous waste products

from the blood through dialysis.

Reason: Reabsorption does not occur in artificial kidneys.





Q.28. Assertion: The excretory unit of the kidney is the nephrons.

Reason: It has no role in the secretion of urine.





Q.29. Assertion: The Bowmen’s capsule and the tubules together make a nephron

Reason: The function of the tubule is to allow the selective reabsorption of

substances like glucose, amino acids, urea salt, and water into the blood

capillaries.





Q.30. Assertion: Ureters are tubes that carry urine from the kidneys to the bladder.

Reason: Urine stored in the urethra.





CHAPTER 6: LIFE PROCESSES

NUTRITION

Q.1. Which of the following equations is the summary of photosynthesis?

a) 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O

b) 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O

c) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O

d) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6CO2 + 6H2O

Q.2. Which is the correct sequence -

a) mouth → stomach → small intestine → esophagus → large intestine

b) mouth → esophagus → stomach → large intestine → small intestine

c) mouth → stomach → esophagus → small intestine → large intestine

d) mouth → esophagus → stomach → small intestine → large intestine

Q.3. Which of the following is not a digestive enzyme contained in the pancreatic juice?

I. Lipase

II. Hydrochloric acid

III. Mucus

IV. Trypsin

a) I and II

b) II and III

c) II and III

d) only I

Q.4. Raw materials required in the autotrophic mode of nutrition involves:

I. Carbon dioxide and water

II. Chlorophyll

III. Nitrogen

IV. Sunlight

a) I, II, and III

b) I and II

c) I, II, and IV

d) I, II, III and IV

Q.5. In which of the following groups of organisms, food materials are broken down outside

the body and absorbed?

(a) Mushroom, green plants, Amoeba

(b) Yeast, mushroom, bread mold

(c) Paramecium, Amoeba, Cuscuta

(d) Cuscuta, lice, tapeworm

Q.6. The diagram shows the arrangement of cells inside the leaf of a green plant. Which cells

normally contain chloroplasts?

a) 1 and 2

b) 1 and 4

c) 2 and 3

d) 2 and 4


a) (a-v),(b-ii),(c-vi),(d-iii) ,(e-i),(f-iv)

b) (a-i), (b-v), (c-vi) (d-iii) ,(e-ii),(f-iv)

c) (a-vi),(b-v),(c-iii),(d-ii),(e-i),(f-iv)

d) (a-iii),(b-iv),(c-ii),(d-vi) ,(e-i),(f-iv)


a) (a-iv),(b-i),(c-v),(d-iii) ,(e-ii),

a) (a-i), (b-v), (c-vi) (d-iii) ,(e-ii)

c) (a-vi),(b-v),(c-iii),(d-ii),(e-i)

d) (a-iii),(b-iv),(c-ii),(d-vi) ,(e-i)

A B

a Photosynthesis i Organisms that cannot prepare their own food

b Autotroph ii Cells that surround a stomatal pore

c Chloroplast iii The cell organelle where photosynthesis occur

d Guard cells iv An enzyme that digest protens

e Heterotroph v Organisms that can synthesiszed their own food

f Pepsin vi The process that link light energy with chemical

energy

A B

a Autotrophic nutrition i Fungi

b Saprophytic nutrition ii Humans

c Parasitic nutriion iii Amoeba

d Intracellular digestion iv Green plants

e Holozoic nutrition v Leech


a) (a-v),(b-iii),(c-i),(d-ii)

b) (a-i), (b-ii), (c-vi) (d-iii)

c) (a-iv),(b-i),(c-iii),(d-ii),

d) (a-iv),(b-iii),(c-i),(d-ii)

Q.10. In the given diagram human digestive system is depicted by observing the diagram,

identify A, B, C, and D and choose the correct option given below.

1 2 3 4

a Oesophagus Pancreas Stomach Large intestine

b Large intestine Pancreas Oesophagus Stomach

c Oesophagus Stomach Pancreas Large intestine

d Trachea Stomach Small intestine Liver

A B

a Bile i Pancreas

b Amylase ii Gastric gland

c Trypsin iii Salivary gland

d HCl iv Liver

Q.11. Given diagram shows the process of photosynthesis. Identify P, J,W and N and chose

the correct option given below.

P J W N

a Sunlight Water Carbon dioxide Oxygen

b Sunlight Oxygen Carbon dioxide Water

c Oxygen Water Sunlight Carbon dioxide

d Carbon dioxide Sunlight Oxygen Water

Q.12. The given diagram shows parts of a flowering plant. Choose the statements which are

correct.

I) Maximum transpiration occur at „b‟

II) Maximum transpiration occurs at a

III) d has lenticels for the exchange of gases

IV) No gaseous exchange takes place at c

a) I and III b) I and IV c) II and III d) II and IV

Q.13. The given diagram shows structure of the chloroplast. Identify X, Y and Z and choose

the correct option given below.

Q.14. Given below is the pathway of carbohydrate digestion identify the enzymes labeled as

A, B, C, D, and choose the correct option.

a) A- Amylase, B- Maltase, C- Lactase, D- Invertase

b) A- Amylase, B- Maltase , C- Invertase, D- Lactase

c) A- Amylase, B –Invertase, C –Maltase, D – Lactase

d) A- Amylase, B – Lactase, C- Maltase, D- Invertase

***ALL THE BEST***

X Y Z

a Dark reaction Light reaction Carbohydrate synthesis

b Light reaction Carbohydrate synthesis Carbohydrate storage

c Light reaction Carbohydrate storage Carbohydrate synthesis

d Carbohydrate synthesis Carbohydrate storage Light reaction

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CHAPTER 6: LIFE PROCESSES Circulation